在filter 中注入bean

 <filter>
        <filter-name>DelegatingFilterProxy</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
        <init-param>
            <param-name>targetBeanName</param-name>
            <param-value>responseJsonFilter</param-value>        
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>DelegatingFilterProxy</filter-name>
       <url-pattern>*.json</url-pattern>
    </filter-mapping>

 

<bean id="responseJsonFilter" name="responseJsonFilter" class="com.howbuy.web.filter.ResponseJsonFilter">
        <property name="coopService">
            <ref bean="coopService" />
        </property>
    </bean>